静电实验。一般很难获得好的效果。其根本原因是漏电和获取较多电量的问题很难解决好。我们在教学实践中,对静电场的几个常规实验进行了初浅的研究,并着力于起电与绝缘材料的探索,取得了比较满意的效果。一、获取较多电量的问题。包装用的普通白色泡沫塑料(以下简称塑料)是一种取材方便、起电容易的材料,可以用它来做起电盘。具体做法是,根据需要加工两块长方形(例如尺寸为20厘米×5厘米×4厘米)的塑料块。将其中的一块用尼龙布(的确良布也行)或普通的塑料纸包好(要平整),然后将两塑料块轻轻地摩擦 Static experiment. It is generally difficult to obtain good results. The fundamental reason is that it is difficult to solve the problem of leakage and getting more power. In our teaching practice, we have conducted preliminary research on several routine experiments of electrostatic fields and focused on the exploration of electrification and insulating materials, and achieved relatively satisfactory results. First, get more power problems. The ordinary white foam plastic for packaging (hereinafter abbreviated as plastic) is a material that is easy to draw and easy to use, and it can be used to make electric plates. Specifically, two rectangles (for example, 20 cm x 5 cm x 4 cm in size) are processed as required. One of them is wrapped with nylon cloth (also Dacron cloth) or plain plastic paper (to be flat), then the two plastic blocks are gently rubbed